{"finding_id":"DF-4973","status":"not_reproduced","attempts":1,"reproduced":0,"impact":"none","confidence":"certain","verdict":"Dead scratch code with ZERO attack surface (proven: guest build = 216 lines of hard compiler errors exit 1, absent from dm SUBDIR, no dm_target_insert registration, no prebuilt .ko anywhere): the last unaudited dm target is a 2010 mid-implementation commit. Latent bugs catalogued so they are never revived: double vn_strategy of the SAME bio (:376-377), post-loop OOB &config->disks[i] with i==ndisks (:295), double biodone of the parent bio via both write clones (:135-137/:170-175), undefined macros and XXX/foo placeholders. Delete-the-directory fix (or write a real mirror target from scratch).","exploit_chain":"none - cannot compile, not wired into any build","evidence":"findings/poc/DF-4973/ (build.log, env.txt, run.log)","kernel_refs":["sys/dev/disk/dm/dmirror/dm_target_dmirror.c","sys/dev/disk/dm/Makefile"],"guest_uname":"DragonFly dfbsd 6.5-DEVELOPMENT","code_hash":""}